M51 - Wide Field (Jon Rista)

Celestial hemisphere: Northern · Constellation: Canes Venatici (CVn) · Contains: IC 4263 · M 51 · NGC 5169 · NGC 5194 · NGC 5195 · NGC 5198 · NGC 5229 · Whirlpool galaxy

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M51 - Wide Field

My first image in a while. I actually gathered the data for this a month ago, but wasn't able to process it until now. Integrated from 126 out of 192 subs, a total of 7h 21m integration time. The first batch of subs came from mid February, and star quality was not as good, so most of those were tossed. The rest came from the second two nights of imaging, 80 and 61 subs from early through mid March. Most of those were kept.

Manually integrated with PixInsight, subs filtered with SubframeSelector. All processing thus far in PixInsight, using RGB-normalized extracted Lum. RGB processing and creating an L+RGB image is the ultimate goal.

Canon 600mm lens with a 1.4x teleconverter (840mm f/5.6 @ f/6.3) and a Canon 5D III. Total imaging time spanned about four nights, one night ended up being a bust, another night gathered data but the stars weren't of high enough quality, and the last two nights ended up being phenomenal (excellent seeing, clear all night, several hours of solid, uninterrupted imaging, delivering about 150 subs in and of themselves.)

Original
B
C
Final
D

Cloudy Nights
Central USA

5 - Deep Sky Objects (DSO)
6 - Galaxies
8 - DSLR

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Distribution of astrophotographers

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	Distinct awarded users	Total awarded images
Image of the day
Top picks
Top pick nominations

Distribution of subject types

This table shows the distribution of awards per subject type, compared to the popularity of images of that subject type.
	Image of the day	Top pick	Top pick nominations	Total submitted
Deep sky
Solar system
Extremely wide field
Star trails
Northern lights
Noctilucent clouds
Landscape

Distribution of data sources

This table shows the distribution of awards per data source, compared to the popularity of images acquired from that data source.
	Image of the day	Top pick	Top pick nominations	Total submitted
Backyard
Traveller
Own remote observatory
Amateur hosting facility
Public amaeteur data
Professional, scientific grade data
Mix of multiple sources
Other
Unknown

The “AstroBin Image of the Day and Top Picks”, or IOTD/TP, is a long-running system to promote beautiful, interesting, peculiar, or otherwise amazing astrophotographs, with a focus on technical excellence. Learn more.

Submitted The date and time when you submitted this image for IOTD/TP consideration.	...
Views by Submitters (available since September 19th, 2023) Every image is assigned to 50% of available Submitters. In the event that at least 80% of them don't view the image before its time in the IOTD/TP process expires, it's assigned to the other 50% of Submitters and the process begins anew.
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Promotions by Reviewers When 3 distinct Reviewers promote the image, it moves on to the next stage of the process: evaluation for IOTD status.
Early dismissal Staff members have a lot of images to inspect on a daily basis, and they can dismiss images if they believe they don't meet the requirements for IOTD/TP selection. If an image is dismissed 5 times, it's removed from the process. This streamlines the process and ensures that any bias present in promotions could be overruled by other staff members.

Status	Basic success
Started	...
Astrometry.net job	598777
PixInsight job	n/a
PixInsight queue size	n/a
PixInsight stage	n/a

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M51 - Wide Field

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M51 - Wide Field

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